John David Chandler
Family Medicine Physician · Sioux Falls, SD
John David Chandler is a family medicine physician with a practice address in Sioux Falls, South Dakota, and NPI 1437737343, issued on Mar 31, 2021. Check the license (South Dakota 15646, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.
- Name
- John David Chandler
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 15646 SD
Self-reported in NPPES; status is on the state search - Practice location
- 1115 E 20TH St, Sioux Falls, SD 57105
- Phone
- (605) 575-1644
- Enumerated
- Mar 31, 2021
- Record last updated
- Aug 13, 2025
- Medicare enrollment
- Enrolled (PECOS I20230215001090); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 601 in South Dakota → Look up another NPI →
Also registered at 1115 E 20TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John David Chandler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
Search for license 15646Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average family medicine physician in 2024
619 Medicare Part D claims for 95 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Gabapentin34 claims
- Atorvastatin Calcium28 claims
- Losartan Potassium27 claims
- Lisinopril26 claims
- Metformin Hcl26 claims
- Hydrocodone-Acetaminophen21 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $36.00
2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Avera St MarysPierre, SD
- Monument Health Rapid City Hospital IncRapid City, SD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John David Chandler among 601 family medicine physician records in South Dakota
John David Chandler is one of 601 family medicine physician records with a practice address in South Dakota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2020 · median 2008 among the 393 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
195 family medicine physician records list a practice address in Sioux Falls
They are 195 of the 6,563 NPPES records with a practice address in Sioux Falls, and 601 family medicine physician records in South Dakota.
All 601 in South Dakota → Every provider in Sioux Falls → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Brechtelsbauer, MDSioux Falls, SD 571051831177674
- Valerie Hearns, MDSioux Falls, SD 571051568456846
- Daniel Heinemann, M.D.Sioux Falls, SD 571051508861329
- Leah Johnson, M.D.Sioux Falls, SD 571051588649636
- Earl Kemp, MDSioux Falls, SD 571051134191547
- Janet Lindemann, MDSioux Falls, SD 571051437143724
- Robin Meyer, D.O.Sioux Falls, SD 571051417929845
- Robert Seidel, MDSioux Falls, SD 571051760488209
Common questions
What is John David Chandler's NPI number?
John David Chandler's National Provider Identifier (NPI) is 1437737343, issued on Mar 31, 2021. An NPI identifies a provider in billing; it is not a license.
Where is John David Chandler located?
The NPPES record lists a practice address at 1115 E 20TH St, Sioux Falls, SD, 57105. Phone: (605) 575-1644. Providers update this record themselves, so call before visiting.
How can I verify John David Chandler's license?
NPPES lists South Dakota license number 15646, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John David Chandler prescribe under Medicare Part D?
In 2024, John David Chandler had 619 Medicare Part D claims for 95 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.